The "scam" queries aren't completely gone. Start typing "google sca" and "scam" does get autocompleted.
This is also true of other well known names. While the "scam" suggestion doesn't appear on the initial list after the name is entered, if you type "[person's name] s" "scam" will often appear in the suggestions.
I also tried typing "[software title] s" for a piece of software I use and "scam" appeared in the list. When I checked the AdWords Keyword Tool for the phrase it showed "not enough data" -- so apparently the suggestions are not just based on people actually searching for the phrase, since Google's showing zero data for that query.